Schneider Electric (Barber Colman) MK-4821 Pneumatic Valve Actuator R-410A Three-way VT3212 bodies are typically

Three-way VT3212 bodies are typically paired with normally closed actuators

ensuring your equipment meets original factory specifications for low-ambient lockout operation

While the 10-600 series is available in various factory settings

encapsulated design often used in watertight or explosion-proof applications

Direct Fit: Designed for rapid installation

Schneider Electric (Barber Colman) MK-4821 Pneumatic Valve Actuator R-410A Three-way VT3212 bodies are typicallyThe Schneider Electric MK 4821 is a professional grade pneumatic valve actuator designed for the precise positioning of 1 1 2" to 2" VB 9XXX series globe valves in commercial HVACR systems. Built for the rigors of mechanical rooms, this actuator features a rugged die cast aluminum housing and an 11 sq. in. effective diaphragm area. It operates on a proportional pneumatic signal with a nominal 8 to 13 psi spring range, ensuring reliable spring return